the FSK connection

Transceivers capable of [:AFSKFSK:FSK] operation generally provide a [http://en.wikipedia.org/wiki/Transistor–transistor_logic TTL] input (voltage levels +5 VDC, 0 VDC) that controls the switching between Mark and Space frequency generation:

WinWarbler can be configured to generate this signal

or

All of these signals employ [http://en.wikipedia.org/wiki/Rs232 RS-232] voltage levels (+12 VDC, -12 VDC), so an external level converter is required:

WinWarbler can be configured to generate the FSK signal on the TxD, RTS, or DTR pins of any available serial port. If you are using a USB-to-serial-port adaptor and will be configuring WinWarbler to generate the FSK signal on the TxD pin, then this USB-to-serial-port adaptor must support 5-bit operation at 45 baud; if you are using a USB-to-serial-port adaptor and will be configuring WinWarbler to generate the FSK signal on the RTS or DTR pins, then support for 5-bit operation at 45 baud is not required.

To use the [:PTTMechanism:PTT serial port's] !TxD pin, open the Config window's PTT tab and note the serial port selected in the PTT panel's Port tab. Select the Config window's RTTY tab, and in the Modulation and transceiver mode panel's FSK section,

For more flexibility in serial port selection or to utilize a USB-to-serial-port adaptor that does not support 5-bit operation at 45 baud, open the Config window's RTTY tab, and in the Modulation and transceiver mode panel's FSK section,

When the Main window's Operating Mode panel is set to RTTY with the Enabled box checked on the Config window's RTTY tab, an EXTFSK icon will appear in the Windows Task Bar along the bottom of your monitor. Click this EXTFSK icon to open the EXTFSK window; in this window,

The EXTFSK icon will appear in the Windows Task Bar whenever you operate in soundcard RTTY mode, but it will remember the settings you've established, so subsequently opening the ESTFSK window is unnecessary.


[:Multimode_Setup:Setting up CW, Phone, PSK, and RTTY Operation]

[:Operation:Getting Started with CW, Phone, PSK, and RTTY Operation]

[:GettingStarted:Getting Started with DXLab]